A high-efficiency jet injection tool for marine carbon dioxide storage

Abstract

The present invention discloses a high-efficiency jet injection tool for marine carbon dioxide storage, which relates to the technical field of carbon dioxide hydrate storage tools. The tool is mainly composed of a continuous pipe quick connector, an open-hole anchoring mechanism, a sliding core locking mechanism, and a jet injection head. The open-hole anchoring mechanism adopts a deep-tooth slip, a long rubber cylinder, an upper one-way valve plate, and a lower one-way valve plate, which enhances the reliability and stability of the tool during carbon dioxide jet injection operations. The sliding core locking mechanism is equipped with a sliding core barrel I, a sliding core barrel II, a locking connection, a bevel guide ring, and a return spring I, which realizes the automatic control of the opening and closing of the jet injection function. The device has a simple structural design and can achieve anchoring and sealing in the case of open-hole drilling, and can also achieve carbon dioxide jet injection without lifting and lowering the pipe string or running other tools. The tool not only ensures the continuity and efficiency of the operation, but also greatly reduces the operating cost and environmental risks.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide hydrate storage tools, and in particular to a high-efficiency jet injection tool for marine carbon dioxide storage. Background Art

[0002] Marine CO2 storage technology, a key component of global carbon reduction strategies, primarily encompasses two categories: marine water storage and marine geological storage. The former involves direct storage in seawater or on the seabed, with typical applications including the construction of submarine CO2 lakes. The latter fully utilizes the natural geological structure of the seabed, including storage in submarine sediments, saline layers, oil and gas reservoirs, and basalt layers. The storage principle is based on the interaction between CO2 and geological structures. This involves the injected CO2, surrounded by low-permeability rocks, undergoing processes such as sealing, dissolution, binding, adsorption, and mineralization, ultimately achieving long-term, stable storage.

[0003] In view of the special environment and technical challenges of marine carbon dioxide geological storage, marine carbon dioxide injection tools must meet the following key points: ① They can fix the downhole tubing during high-pressure carbon dioxide injection and seal the annulus to prevent the injected carbon dioxide from escaping; ② They can achieve carbon dioxide injection under the premise of running the tubing in a single trip; ③ The tool structure should be simple and the performance should be reliable.

[0004] After comprehensive market research and technical evaluation, it was found that no downhole injection tool currently meets all of the aforementioned functional requirements in a comprehensive and efficient manner. Therefore, the invention of a highly efficient jet injection tool for marine CO2 storage has become an urgent need. Summary of the Invention

[0005] In response to the special environment and technical challenges of marine carbon dioxide geological storage, a high-efficiency jet injection tool for marine carbon dioxide storage was invented. It consists of a continuous pipe quick connector, an open hole anchor sealing mechanism, a sliding core locking mechanism, and a jet injection head. The open hole anchoring and sealing mechanism adopts deep tooth slips, long rubber tubes, upper and lower one-way valve plates, which ensure the stability of the downhole tubing during the injection injection operation, and realize the tight sealing of the annulus during the high-pressure carbon dioxide injection process, effectively preventing carbon dioxide leakage, ensuring the sealing efficiency and environmental safety, and enhancing the reliability and practicality of the tool during carbon dioxide injection injection operations; the sliding core locking mechanism is equipped with a sliding core barrel I, a sliding core barrel II, a locking connection, a bevel guide ring, and a return spring I, which realizes the automatic control of the opening and closing of the injection injection function, and realizes the completion of carbon dioxide injection in a single trip of the tubing operation, simplifying the operation process; the structural design of this device is simple, and it can achieve anchoring and sealing in the case of open hole drilling, and can also achieve carbon dioxide injection without lifting and lowering the tubing or running other tools; this tool not only ensures the continuity and efficiency of the operation, but also greatly reduces the operation cost and environmental risks.

[0006] The present invention solves the technical problem by adopting the following technical solution: a high-efficiency jet injection tool for marine carbon dioxide storage, mainly composed of a coiled tubing quick connector, an open hole anchor sealing mechanism, a sliding core locking mechanism, and a jet injection head, characterized by:

[0007] The coiled tubing quick connector consists of a connector clamping ring, a coiled tubing insertion connector, a stop pin, and a rubber sealing ring I. The connector clamping ring and the coiled tubing insertion connector cooperate with each other, the rubber sealing ring I is installed at the head end of the coiled tubing insertion connector, and the stop pin is installed in the middle of the coiled tubing insertion connector.

[0008] The open hole anchor sealing mechanism is composed of an anchor sealing seat, an upper one-way valve plate, a reset spring I, a gasket, a nut, a deep-toothed slip, a reset spring II, a deep-toothed slip sleeve, a screw, an upper long rubber tube seat, a long rubber tube, a lower long rubber tube seat, a lower one-way valve plate, and a rubber sealing ring II: the anchor sealing seat is provided with a self-locking shaft shoulder, a shear pin groove, and a limit shaft shoulder on the outside of the head end, a plurality of trapezoidal upper liquid inlets are provided on the inside of the head end, a deep-toothed slip seat, a deep-toothed slip sleeve mounting groove, a screw hole, a long rubber tube seat mounting platform, and a long rubber tube mounting platform are provided in the middle part, a plurality of liquid inlet channels and seat sealing grooves are provided inside, a plurality of trapezoidal lower liquid outlet holes are provided at the tail end, and a plurality of one-way valve mounting holes are provided at the head and tail ends respectively. The upper liquid inlet, deep-tooth slip seat, liquid inlet channel, seat seal groove, and lower liquid outlet are interconnected, and their head end is connected to the continuous tubing insertion joint. The upper one-way valve plate, reset spring I, gasket, and nut are sequentially connected and assembled and then installed inside the head end of the anchoring and packing seat. The deep-tooth slip, reset spring II, and deep-tooth slip sleeve are assembled and installed in the middle of the anchoring and packing seat by screws. The long rubber sleeve is mounted on the anchoring and packing seat. The upper and lower long rubber cylinder seats are fixed at both ends of the long rubber sleeve. The lower one-way valve plate, reset spring I, gasket, and nut are sequentially connected and assembled and then installed inside the end of the anchoring and packing seat. The rubber sealing ring II is installed at the end of the deep-tooth slip.

[0009] The sliding core locking mechanism consists of a sliding core tube I, a sliding core tube II, a locking connection, a bevel reset ring, a reset spring III, an outer cylinder body, and a rubber sealing ring IV: the locking connection head end is provided with a connecting thread I, a connecting boss is provided in the middle, and a guide self-locking bevel is provided at the tail end, which is connected to the tail end of the anchoring and isolation seat. The sliding core tube I head end is provided with a pressure drop bevel, a limiting boss is provided at the front end, and a liquid outlet and a sealing groove III are provided at the tail end, which are installed inside the anchoring and isolation seat. The sliding core tube II is sleeved in the locking connection, the bevel reset ring is sleeved on the sliding core tube II, and the head end contacts the lock connection tail, the reset spring III is sleeved on the sliding core tube II, and the head end contacts the bevel reset ring, the outer cylinder body is sleeved on the outside of the locking connection, the bevel reset ring, and the reset spring III, and the head end is connected to the middle of the locking connection, the rubber sealing ring III is installed on the sliding core tube I, and the rubber sealing ring IV is installed on the sliding core tube II;

[0010] The jet injection head consists of a jet injection head, an injection nozzle, and a sealing plug: the head end of the jet injection head is provided with a connecting thread III, and several groups of nozzle mounting holes are provided circumferentially in different axial segments, which are arranged in a spiral manner. A jet injection cavity is provided inside, which is connected to the tail end of the outer cylinder. The injection nozzle is installed on the jet injection head, and the sealing plug is installed at the tail of the jet injection head.

[0011] The coiled tubing insertion joint has a sealing groove I at its head end, a pin shearing groove in the middle, and a truncated cone-shaped boss inside. The sealing groove I is used to install a rubber sealing ring I, and the pin shearing groove is used to install a limit pin. The truncated cone-shaped boss contacts the head end of the anchor packer.

[0012] The deep-tooth slip is provided with a limit groove on the upper part, a reset spring installation groove in the middle part, and a sealing groove II on the lower part; the limit groove contacts the deep-tooth slip sleeve, the reset spring installation groove is used to install the reset spring II, the deep-tooth slip is installed in the deep-tooth slip seat, the deep-tooth slip sleeve is installed in the deep-tooth slip sleeve installation groove, and is fixed by the screws;

[0013] The lower long rubber tube seat is provided with a transition arc surface at the head end, a position-limiting mounting boss in the middle, and a mounting thread at the tail end. The transition arc surface contacts the outside of the long rubber tube, the position-limiting mounting boss contacts the front end of the long rubber tube, and the mounting thread is connected to the anchoring and sealing seat.

[0014] The locking connection head end connecting thread I is connected to the anchoring seal seat, the connecting boss contacts the outer cylinder, and the guiding self-locking inclined surface contacts the inclined surface reset ring; the outer cylinder is provided with a connecting thread II at the front end, a boss is provided in the middle, and a limit connecting boss is provided at the tail end, the connecting thread II is connected to the locking connection, the boss contacts the tail end of the reset spring III, and the limit connecting boss is connected to the injection head;

[0015] A sealing plug mounting platform is provided inside the end of the injection head, and the injection nozzle mounting hole is connected to the injection cavity;

[0016] The upper one-way valve plate is provided with a valve plate at the head end, a connecting screw at the middle part, and a connecting thread IV at the tail end. The valve plate is matched with the upper liquid inlet, and the connecting screw passes through the one-way valve mounting hole of the anchor seal seat and is connected with the gasket and nut;

[0017] The sliding core cylinder II has a connecting thread V inside its head end, a limiting guide boss and contact teeth at its front end, and a guide groove and a sealing groove IV in its middle.

[0018] The beneficial effects of the present invention are:

[0019] 1. The tool is designed with an open-hole anchoring mechanism that can operate during open-hole drilling. This ensures the stability of the tubing string and a tight seal of the annulus during high-pressure CO2 injection operations, effectively preventing CO2 leakage and ensuring storage efficiency and environmental safety.

[0020] 2. By designing a sliding core self-locking mechanism in the tool, the opening and closing of the jet injection function can be automatically controlled. This allows for the injection of carbon dioxide without lifting or lowering the string or running other tools, simplifying the operation process and improving operational efficiency and cost-effectiveness.

[0021] 3. The jet injection tool has a simple structural design. Through the combination of key components, it integrates complex functions and forms an efficient and stable working system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the appearance diagram of the present invention;

[0023] Figure 2 This is a diagram of a coiled tubing quick connector according to the present invention;

[0024] Figure 3 This is a plan view of the coiled tubing quick connector of the present invention;

[0025] Figure 4 This is a diagram of the open hole anchoring mechanism of the present invention;

[0026] Figure 5 This is a plan view of the open hole anchoring mechanism of the present invention;

[0027] Figure 6 This is a diagram of the sliding core locking mechanism of the present invention;

[0028] Figure 7 This is a plan view of the sliding core locking mechanism of the present invention;

[0029] Figure 8 This is a diagram of the injection head of the present invention;

[0030] Figure 9 This is a plan view of the jet injection head of the present invention

[0031] Figure 10 This is a diagram of the coiled tubing being inserted into a joint according to the present invention;

[0032] Figure 11 This is a plan view of the coiled tubing inserted into the joint of the present invention;

[0033] Figure 12 Figure 1 is an anchor seal seat diagram of the present invention;

[0034] Figure 13 This is a plan view of the anchor seal seat of the present invention;

[0035] Figure 14 It is the deep tooth kava map of the present invention;

[0036] Figure 15 This is a diagram of a long rubber tube of the present invention;

[0037] Figure 16This is a diagram of the long rubber cylinder seat of the present invention;

[0038] Figure 17 This is a planed view of the long rubber cylinder seat of the present invention;

[0039] Figure 18 Locking connection diagram for the present invention;

[0040] Figure 19 This is a diagram of the inclined plane reset ring of the present invention;

[0041] Figure 20 This is a diagram of the injection head of the present invention;

[0042] Figure 21 This is a plan view of the jet injection head of the present invention;

[0043] Figure 22 This is a diagram of the injection nozzle of the present invention;

[0044] Figure 23 The one-way valve of the present invention;

[0045] Figure 24 This is the sliding core barrel I diagram of the present invention;

[0046] Figure 25 This is the sliding core cylinder II diagram of the present invention;

[0047] Figure 26 This is a diagram of the outer cylinder of the present invention;

[0048] Figure 27 This is a plan view of the outer cylinder of the present invention;

[0049] In the figure, 1-connector clamping ring, 2-continuous pipe insertion connector, 201-sealing groove I, 202-pin shearing groove, 203-cone-shaped boss, 3-limiting pin, 4-anchoring seal seat, 401-check valve mounting hole, 402-shear pin groove, 403-limiting shoulder, 404-screw hole, 405-deep tooth slip seat, 406-deep tooth slip sleeve mounting groove, 407-long rubber tube seat mounting platform, 408-long rubber tube mounting platform, 409-seat sealing groove, 4010-self-locking shoulder, 4 011-upper liquid inlet, 4012-liquid inlet channel, 4013-lower liquid outlet, 5-deep tooth slip, 501-limiting groove, 502-reset spring installation groove, 6-deep tooth slip sleeve, 7-screw, 8-upper long rubber cylinder seat, 9-long rubber cylinder, 10-lower long rubber cylinder seat, 1001-limiting mounting boss, 1002-mounting thread, 1003-transition arc surface, 11-locking connection, 1101-connecting thread Ⅰ, 1102-connecting boss, 1103-guide self-locking inclined surface, 1 2-outer cylinder, 1201-connecting thread II, 1202-boss, 1203-limiting connecting boss, 13-injection head, 1301-connecting thread III, 1302-injection cavity, 1303-injection nozzle mounting hole, 14-injection nozzle, 15-rubber sealing ring I, 16-upper one-way valve plate, 1601-valve plate, 1602-connecting screw, 1603-connecting thread IV, 17-reset spring I, 18-nut, 19-gasket, 20-reset spring II, 21 -Rubber sealing ring II, 22-sliding core cylinder I, 2201-pressure drop slope, 2202-limiting boss, 2203-sealing groove III, 2204-liquid outlet, 23-rubber sealing ring III, 24-lower one-way valve plate, 25-sliding core cylinder II, 2501-connecting thread V, 2502-limiting guide boss, 2503-contact tooth, 2504-guide groove, 2505-sealing groove IV, 26-inclined reset ring, 27-reset spring III, 28-rubber sealing ring IV, 29-sealing plug. DETAILED DESCRIPTION

[0050] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0051] like Figures 1 to 27 As shown, a high-efficiency jet injection tool for marine carbon dioxide storage is mainly composed of a safety joint mechanism, a mechanical sliding core locking mechanism, an anchoring mechanism, a sealing mechanism, and a jet cavity fracturing injection mechanism. The characteristics are as follows: A high-efficiency jet injection tool for marine carbon dioxide storage is mainly composed of a coiled tubing quick connector, an open hole anchor sealing mechanism, a sliding core locking mechanism, and a jet injection head. The characteristics are as follows:

[0052] The continuous pipe quick connector, such as Figures 2-3As shown, it consists of a joint clamping ring 1, a continuous tubing insertion joint 2, a limiting pin 3, and a rubber sealing ring I 15: the joint clamping ring 1 and the continuous tubing insertion joint 2 are connected to each other, the rubber sealing ring I 15 is installed at the head end of the continuous tubing insertion joint 2, and the limiting pin 3 is installed in the middle of the continuous tubing insertion joint 2;

[0053] The open hole anchoring mechanism, such as Figures 4-5 As shown, it is composed of an anchoring seal seat 4, an upper one-way valve plate 16, a reset spring I 17, a gasket 19, a nut 18, a deep-toothed slip 5, a reset spring II 20, a deep-toothed slip sleeve 6, a screw 7, an upper long rubber cylinder seat 8, a long rubber cylinder 9, a lower long rubber cylinder seat 10, a lower one-way valve plate 24, and a rubber sealing ring II 21: the outer end of the anchoring seal seat 4 is provided with a self-locking shaft shoulder 4011, a shear pin groove 402, a limit shaft shoulder 4 03, there are several trapezoidal upper liquid inlets 4012 inside the head end, deep tooth slip seat 405, deep tooth slip sleeve mounting groove 406, screw hole 404, long rubber tube seat mounting platform 407, long rubber tube mounting platform 408, several liquid inlet channels 4013 and seat sealing groove 409 are provided inside, several trapezoidal lower liquid outlet holes 4014 are provided at the tail end, and several one-way valve mounting holes 4013 are provided at the head and tail ends respectively. 1. The upper liquid inlet 4012, deep-tooth slip seat 405, liquid inlet channel 4013, seat seal groove 409, and lower liquid outlet hole 4014 are interconnected, and their head ends are connected to the continuous pipe insertion joint 2. The upper one-way valve plate 16, reset spring I 17, gasket 19, and nut 18 are sequentially connected and assembled and then installed inside the head end of the anchoring and packing seat 4. The deep-tooth slip 5, reset spring II 20, and deep-tooth slip sleeve 6 are assembled and installed in the middle of the anchoring and packing seat 4 by screws 7. The long rubber cylinder 9 is sleeved on the anchoring and packing seat 4. The upper long rubber cylinder seat 8 and the lower long rubber cylinder seat 10 are fixed at both ends of the long rubber cylinder 9. The lower one-way valve plate 24, reset spring I 17, gasket 19, and nut 18 are sequentially connected and assembled and then installed inside the end of the anchoring and packing seat 4. The rubber sealing ring II 21 is installed at the end of the deep-tooth slip 5;

[0054] The sliding core locking mechanism, such as Figures 6-7As shown, it consists of a sliding core tube I 22, a sliding core tube II 25, a locking connection 11, a slope reset ring 26, a reset spring III 27, an outer cylinder 12, and a rubber sealing ring IV 28: the locking connection 11 is provided with a connecting thread I 1101 at the head end, a connecting boss 1102 in the middle, and a guide self-locking inclined surface 1103 at the tail end, which is connected to the tail end of the anchoring isolation seat 4; the sliding core tube I 22 is provided with a pressure drop inclined surface 2201 at the head end, a limiting boss 2202 at the front end, a liquid outlet 2204 and a sealing groove III 2203 at the tail end, and is installed on the anchoring isolation seat 4, the sliding core cylinder II 25 is sleeved in the locking connection 11, the inclined reset ring 26 is sleeved on the sliding core cylinder II 25, and the head end is in contact with the tail of the locking connection 11, the reset spring III 27 is sleeved on the sliding core cylinder II 25, and the head end is in contact with the inclined reset ring 26, the outer cylinder 12 is sleeved on the outside of the locking connection 11, the inclined reset ring 26, and the reset spring III 27, and the head end is connected to the middle of the locking connection 11, the rubber sealing ring III 23 is installed on the sliding core cylinder I 22, and the rubber sealing ring IV 28 is installed on the sliding core cylinder II 25;

[0055] The injection head, such as Figures 8-9 As shown, it consists of a jet injection head 13, an injection nozzle 14, and a sealing plug 29: the head end of the jet injection head 13 is provided with a connecting thread III 1301, and several groups of nozzle mounting holes 1303 are provided circumferentially in different axial segments, which are arranged in a spiral manner, and a jet injection cavity 1302 is provided inside, which is connected to the tail end of the outer cylinder 12, the injection nozzle 14 is installed on the jet injection head 13, and the sealing plug 29 is installed at the tail of the jet injection head 13.

[0056] The first end of the continuous pipe insertion joint 2 is provided with a sealing groove I 201. Figures 10-11 As shown, a pin shear groove 202 is provided in the middle, and a truncated cone-shaped boss 203 is provided inside. The sealing groove I 201 is used to install the rubber sealing ring I 15, and the pin shear groove 202 is used to install the limit pin 3. The truncated cone-shaped boss 203 contacts the head end of the anchoring seal seat 4;

[0057] The deep tooth slips 5, as Figure 14 As shown, a limiting groove 501 is provided on the upper part, a return spring installation groove 502 is provided in the middle part, and a sealing groove II 503 is provided on the lower part; the limiting groove 501 contacts the deep-tooth slip sleeve 6, the return spring installation groove 502 is used to install the return spring II 20, the deep-tooth slip 5 is installed in the deep-tooth slip seat 405, and the deep-tooth slip sleeve 6 is installed in the deep-tooth slip sleeve installation groove 406 and fixed by the screw 7;

[0058] The lower long rubber cylinder seat 10 is as follows Figures 16-17As shown, a transition arc surface 1003 is provided at the head end, a position-limiting mounting boss 1001 is provided in the middle, and a mounting thread 1002 is provided at the tail end. The transition arc surface 1003 contacts the outside of the long rubber tube 9, the position-limiting mounting boss 1001 contacts the front end of the long rubber tube 9, and the mounting thread 1002 is connected to the anchoring seal seat 4.

[0059] The locking connection 11, such as Figure 18 As shown, the head end is provided with a connecting thread Ⅰ1101, the middle part is provided with a connecting boss 1102, and the tail part is provided with a guide self-locking inclined surface 1103. The connecting thread Ⅰ1101 is connected to the anchoring seal seat 4, the connecting boss 1102 is in contact with the outer cylinder 12, and the guide self-locking inclined surface 1103 is provided. Figure 19 As shown, it contacts the inclined reset ring 26; the outer cylinder 12, as shown Figures 26-27 As shown, a connecting thread II 1201 is provided at the front end, a boss 1202 is provided in the middle, and a position-limiting connecting boss 1203 is provided at the tail end. The connecting thread II 1201 is connected to the locking connection 11, the boss 1202 contacts the tail end of the return spring III 27, and the position-limiting connecting boss 1203 is connected to the injection head 13.

[0060] The injection head 13 is as follows: Figures 8-9 As shown, a sealing plug mounting platform 1304 is provided inside the end, and the injection nozzle mounting hole 1303 is connected to the injection cavity 1302;

[0061] The upper one-way valve plate 16, as Figure 23 As shown, a valve plate 1601 is provided at the head end, a connecting screw 1602 is provided in the middle, and a connecting thread IV 1603 is provided at the tail end. The valve plate 1601 cooperates with the upper liquid inlet 4012, and the connecting screw 1602 passes through the one-way valve mounting hole 401 of the anchor seal seat 4 and is connected to the gasket 19 and the nut 18;

[0062] The sliding core tube Ⅰ 22, as Figure 24 As shown, a pressure drop slope 2201 is provided inside the head end, a limiting boss 2202 is provided at the front end, and a liquid outlet 2204 and a sealing groove 2203 are provided at the tail end; the sliding core cylinder II 25, as shown Figure 25 As shown, a connecting thread V 2501 is provided inside the head end, a limiting guide boss 2502 and a contact tooth 2503 are provided at the front end, and a guide groove 2504 and a sealing groove IV 2505 are provided in the middle.

[0063] The specific steps for using this device are as follows:

[0064] The joint is tightened with a compression ring 1, and the coiled tubing is connected to the joint 2 through the coiled tubing. The tool is then lowered to the target seabed formation via an offshore floating platform. The drilling fluid flow rate is increased. After flowing through the pressure drop ramp 2201 at the head of the core barrel I 22, the high-flow drilling fluid pushes the core barrel I 22 and core barrel II 25 downward. The core barrel stops moving when the end of the core barrel II 25 contacts the sealing plug 29. The high-flow, pressured drilling fluid then flows through the upper inlet 4011 at the front end of the anchored packer 4, pushing the upper check valve plate 16 into the inlet channel 4012, seating the seal groove 409, and stopping at the lower check valve plate 24. This process seals the deep-tooth slips 5 and long rubber sleeve 9. The injection medium is changed, with liquid carbon dioxide arriving at the tool through the coiled tubing. The injection flow and pressure of the liquid carbon dioxide are controlled to ensure that the flow and pressure are insufficient to move the core barrel and push the upper check valve plate, thus achieving a self-locking function. Liquid carbon dioxide passes through sliding core barrel I 22 and sliding core barrel II 25, then through guide groove 2504 into injection chamber 1302 of injection head 13, ultimately being ejected through injection nozzle 14, achieving carbon sequestration. When the target carbon sequestration amount is reached, the liquid carbon dioxide injection rate is adjusted, and sliding core barrel I 22 and sliding core barrel II 25, driven by return spring III 27, move upward. At this point, the liquid outlet 2204 on sliding core barrel I 22 coincides with the lower liquid outlet hole 4013, allowing the drilling fluid retained in the liquid inlet channel 4012 and the sealing groove 409 to flow out, achieving the seal.

[0065] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0066] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships described in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0068] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0069] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications can be made based on the above descriptions. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A high-efficiency jet injection tool for marine carbon dioxide storage, comprising a coiled tubing quick connector, an open hole anchor seal mechanism, a sliding core locking mechanism, and a jet injection head, characterized by: The coiled tubing quick connector is composed of a connector clamping ring (1), a coiled tubing insertion connector (2), a stop pin (3), and a rubber sealing ring I (15). The connector clamping ring (1) and the coiled tubing insertion connector (2) are connected to each other in a coordinated manner. The rubber sealing ring I (15) is installed at the head end of the coiled tubing insertion connector (2). The stop pin (3) is installed at the middle of the coiled tubing insertion connector (2). The open hole anchoring mechanism is composed of an anchoring seal seat (4), an upper one-way valve plate (16), a reset spring I (17), a gasket (19), a nut (18), a deep tooth slip (5), a reset spring II (20), a deep tooth slip sleeve (6), a screw (7), an upper long rubber cylinder seat (8), a long rubber cylinder (9), a lower long rubber cylinder seat (10), a lower one-way valve plate (24), and a rubber sealing ring II (21). The anchoring seal seat (4) is provided with a self-locking shaft shoulder (4011) and a shear pin groove (4011) on the outside of the head end. 02), a limiting shoulder (403), a plurality of trapezoidal upper liquid inlets (4012) are provided inside the head end, a deep tooth slip seat (405), a deep tooth slip sleeve mounting groove (406), a screw hole (404), a long rubber tube seat mounting platform (407), a long rubber tube mounting platform (408) are provided in the middle, a plurality of liquid inlet channels (4013) and a seat sealing groove (409) are provided inside, a plurality of trapezoidal lower liquid outlet holes (4014) are provided at the tail end, and a plurality of one-way valve mounting holes (4013) are provided at the head and tail ends respectively. 01), the upper liquid inlet (4012), deep tooth slip seat (405), liquid inlet channel (4013), seat sealing groove (409), and lower liquid outlet (4014) are interconnected, and the head end thereof is connected to the continuous pipe insertion joint (2), and the upper one-way valve plate (16), reset spring I (17), gasket (19), and nut (18) are sequentially connected and assembled and then installed inside the head end of the anchoring seal seat (4), and the deep tooth slip (5), reset spring II (20), deep tooth slip sleeve ( 6) After being assembled, the components are installed in the middle of the anchoring and packing seat (4) by means of screws (7). The long rubber tube (9) is sleeved on the anchoring and packing seat (4). The upper long rubber tube seat (8) and the lower long rubber tube seat (10) are fixed at both ends of the long rubber tube (9). The lower one-way valve plate (24), the return spring I (17), the gasket (19), and the nut (18) are sequentially connected and assembled and installed inside the end of the anchoring and packing seat (4). The rubber sealing ring II (21) is installed at the end of the deep tooth slip (5); The sliding core locking mechanism is composed of a sliding core tube I (22), a sliding core tube II (25), a locking connection (11), a sloped reset ring (26), a reset spring III (27), an outer cylinder (12), and a rubber sealing ring IV (28): the locking connection (11) is provided with a connecting thread I (1101) at the head end, a connecting boss (1102) at the middle, and a guiding self-locking inclined surface (1103) at the tail end, which is connected to the tail end of the anchoring seal seat (4); the sliding core tube I (22) is provided with a pressure drop inclined surface (2201) at the head end, a limiting boss (2202) at the front end, a liquid outlet (2204) and a sealing groove III (2203) at the tail end, and is installed on the anchoring seal seat (4). Inside the spacer (4), the sliding core tube II (25) is sleeved inside the locking connection (11), the inclined reset ring (26) is sleeved on the sliding core tube II (25), and the head end contacts the tail of the locking connection (11), the reset spring III (27) is sleeved on the sliding core tube II (25), and the head end contacts the inclined reset ring (26), the outer cylinder (12) is sleeved on the locking connection (11), the inclined reset ring (26), and the reset spring III (27), and the head end is connected to the middle of the locking connection (11), the rubber sealing ring III (23) is installed on the sliding core tube I (22), and the rubber sealing ring IV (28) is installed on the sliding core tube II (25); The jet injection head consists of a jet injection head (13), a jet nozzle (14), and a sealing plug (29): the head end of the jet injection head (13) is provided with a connecting thread III (1301), and a plurality of groups of jet nozzle mounting holes (1303) are provided circumferentially on different axial sections, presenting a spiral arrangement, and a jet injection cavity (1302) is provided inside, which is connected to the tail end of the outer cylinder (12), the jet nozzle (14) is installed on the jet injection head (13), and the sealing plug (29) is installed at the tail end of the jet injection head (13).

2. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The continuous pipe insertion joint (2) is provided with a sealing groove I (201) at the head end, a pin shearing groove (202) in the middle, and a truncated cone-shaped boss (203) inside. The sealing groove I (201) is used to install a rubber sealing ring I (15), the pin shearing groove (202) is used to install a limit pin (3), and the truncated cone-shaped boss (203) contacts the head end of the anchoring seal seat (4).

3. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The deep-toothed slip (5) is provided with a limiting groove (501) on the upper part, a reset spring installation groove (502) on the middle part, and a sealing groove II (503) on the lower part; the limiting groove (501) contacts the deep-toothed slip sleeve (6), the reset spring installation groove (502) is used to install the reset spring II (20), the deep-toothed slip (5) is installed in the deep-toothed slip seat (405), the deep-toothed slip sleeve (6) is installed in the deep-toothed slip sleeve installation groove (406), and is fixed by the screw (7).

4. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The lower long rubber tube seat (10) is provided with a transition arc surface (1003) at the front end, a position-limiting mounting boss (1001) at the middle, and a mounting thread (1002) at the tail end. The transition arc surface (1003) contacts the outside of the long rubber tube (9), the position-limiting mounting boss (1001) contacts the front end of the long rubber tube (9), and the mounting thread (1002) is connected to the anchoring and sealing seat (4).

5. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The connecting thread I (1101) at the head end of the locking connection (11) is connected to the anchoring sealing seat (4), the connecting boss (1102) is in contact with the outer cylinder (12), and the guiding self-locking inclined surface (1103) is in contact with the inclined surface reset ring (26); the front end of the outer cylinder (12) is provided with a connecting thread II (1201), the middle part is provided with a boss (1202), and the tail part is provided with a limiting connecting boss (1203), the connecting thread II (1201) is connected to the locking connection (11), the boss (1202) is in contact with the tail of the reset spring III (27), and the limiting connecting boss (1203) is connected to the injection head (13).

6. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: A sealing plug mounting platform (1304) is provided inside the end of the jet injection head (13), and the jet nozzle mounting hole (1303) is communicated with the jet injection cavity (1302).

7. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The upper one-way valve plate (16) is provided with a valve plate (1601) at the front end, a connecting screw (1602) in the middle, and a connecting thread IV (1603) at the rear end. The valve plate (1601) cooperates with the upper liquid inlet (4012), and the connecting screw (1602) passes through the one-way valve mounting hole (401) of the anchor seal seat (4) and is connected to the gasket (19) and the nut (18).

8. The high-efficiency jet injection tool for marine carbon dioxide storage according to claim 1, characterized in that: The sliding core cylinder II (25) is provided with a connecting thread V (2501) at the front end, a limiting guide boss (2502) and a contact tooth (2503) at the front end, and a guide groove (2504) and a sealing groove IV (2505) at the middle.

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